Electric-arc lamp.



No. 678,560. Patented'luly I6, I90I.

.1. H. HA'LLBERG. ELECTRIC Anc LAMP.

(Application med Nov. 13.1900.) (No Model.)

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JOSEF HENRIK HALLBERG, OF NEW YORK, N. Y., ASSIGNOR TO GENERAL INOANDESOENT ARO LlGl-IT COMPANY, OF SAMF. PLAGE.

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SBECIFICATION forming part of Letters Patent No.. 678,560, dated duly 16, 1901.

Application filed November 13, 1900. Serial No. 36,322. (No model.)

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Be it known that I, JOSEF HENRIK HALL- BERG, a citizen of the United States, residing at New York city, county and State of New York, have invented certain ynew anduseful Improvements in Electric-Arc Lamps, of which the following is a specification.

My invention relates to electric-arc lamps of the type known as inclosed-arc lamps, and it consists in various details of construction, which will be described in the specification and specified in the claims.

The object of my invention is to simplify and improve the construction of such lamps and decrease their cost.

The accompanying drawings will serve to illustrate my invention, and in which similar letters of reference indicate like parts.

Figure l is avertical section with a portion of the parts shown in elevation. Fig. 2 is a side view. Fig. 3 is a vertical section through the supporting-tube which incloses the upper carbon, dash-pot, and arm which connects the dash-pot to the magnet-armatures and shows the relation of these parts.

. In the drawings, A indicates the top plate or cover of the lamp. Depending from this cover is a supporting-tube B. Secured to the tube B about midway is an annular plate O, which forms a support for the series magnets D and shunt-magnets D Located within the magnets are the armatures E. The armatures are connected together at the top through the plate E', which surrounds the tube B, and is connected through the arm F with the dash-pot G. The dash-pot Gis situated over the piston GH, which is secured to the sleeve H, fixed on the tube B. The lower ends of the armatures are connected together' through the plate I, which also surrounds the tube B. Depending from this plate are the pivoted clutch-arms J, connected together through the spring J.

Located within the supporting-tube B is the 45 upper carbon K. The carbon K is carried in the carbon holder K', which is connected through the conducting-cord L with a source of electric energy.

The magnets D and D are the well-known 5o differential magnets, and the movement of the upper carbon will be fully understood without further description.

Mounted on the lower end of the tube B is an annular plate M, to which is secured a larger annular bottom plate M. These plates are separated by an air-space and buttons of insulating material M2, Fig. l. The annular opening in the plates M and M is suflicient to allow free vertical and lateral movement of the clutch-arms J.

Depending from the tube Bris a bracket N, upon the lower end of which is mounted an annular hollow casting O, within which is located and supported a gas-cap P. rounding the casting O is a reflector Q. The casting O is larger in diameter than the gascap P, thereby permitting free vertical and lateral movement of the gas-cap within it. The casting O is provided with a pair of lateral arms R, perforated vertically and within which are located insulating-tubes S. Situated within the insulating-tubes are sleeves T, provided with shoulders above and below the insulating-tubes, by reason of which the sleeves T are held in position on the lateral arms R.

U represents the frame which supports the lower carbon K2. The frame U has side arms U', which are carried upward through the sleeves T. These arms are jointed at V, so that the lower portion of the frame U can be swung at an angle, as shown in Fig. 2.

Located between the upper shoulders on the sleeves T and Washers on the ends of the arms U" are the springs W. The bottom of the frame U has formed in it an opening X, adapted to :receive the arm Y, projecting from the bottom of the support Y of the arcinclosing globe Z; l

The operation of that part of the lamp mechanism which supports the lower carbon and the arc-inclosing globe will be readily understood. The springs W exert an up-v ward pressure upon the arms U and draw the frame U upward and the jointed portion 9 of the arms within the cavity of the sleeves T, at the same time pressing the top of the arc-inclosing globe into firm contact with the bottom of the gas-cap.

When it is desired to remove the arc-inclos- Sur- Ice

ing globe to introduee a new lower carbon, the frame U is pulled downward, thus oompressing.,r the springs NV until the jointed portion of the arms U is below the cavity of the sleeves T. The frame is then swung to the right or the left, when the globe Z can he removed.

Having thus described my i invention, I claim*- l. In an arelamp, in Combination with a supporting-tube, a casting' secured to the tube and having' lateral perforated arms, a frame for supporting the lower carbon, provided with jointed side arms, and resilient means for normally holding the jointed portions of the frame within the cavity of the arms of the casting.

2. In an are-lamp, in combination with a supporting-tube, an annular plate secured to the tube, pairs of magnets having their armatures in line and adapted for simultaneous movement, a plate Connecting the armatu res at the top, a dash-pot connected to the plate, a plate connecting` the armatures at the bottom, and a eluteh mechanism connected to the last-named plate.

3. In an aro-lamp, in combination with the bottom plate of that portion of the lamp earrying the actuating mechanism, a bracket depending; therefrom, carrying a hollow casting provided with lateral arms, a gas-cap mounted in the casting, an arc-inelosing globe, a frame for supporting the aro-inelosing globe, provided with jointed side arms adapted for vertical movement in the arms of the easting, and means for exerting a constant up- Ward pressure upon the supporting-frame, whereby the jointed side arms of the frame are brought Within the Cavity of the arms of the Casting and the frame looked in position, and the top of the are-inelosing globe into Contact with bottom of gasoap.

In testimony whereof I al'lix my signature in the presence of two Witnesses.

JOSEF HENRIK lflALlilERG.

Witnesses:

J E. Pnrinson, J. A. CAVANAGH. 

